Appendix 6 Detailed Risk Modeling Results 
Source Category Facility NEI ID Facility Name Address City State

Ferroalloys 39167NEI11660 Eramet 16705 State Route 7 South Marietta OH

Ferroalloys 54053NEIWV053FELMAN NEW HAVEN PLANT US ROUTE 62 NORTH NEW HAVEN WV

Table 1 - Facility Identification Information

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Cancer 

MIR

Cancer

 Incidence

Noncancer 

Max HI

Target 

Organ

54053NEIWV053FELMAN 1.81E-05 6.6E-04 3.06E+00 neurological

39167NEI11660 1.29E-05 1.8E-03 3.70E+00 neurological

54053NEIWV053FELMAN 8.75E-06 3.6E-04 9.9E-01 neurological

39167NEI11660 9.63E-06 1.3E-03 1.04E+00 neurological

1 BOLD indicates a cancer risk greater than 1 in a million or a noncancer risk greater than 1

Table 2 – Maximum Predicted HEM-3 Chronic Risks

Control Scenario

Baseline scenario

Facility NEI ID

 Source Category Chronic Risk 1

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REL AEGL1 ERPG1 AEGL2 ERPG2

54053NEIWV053FELMAN Hydrofluoric acid 7.3E+00 2.1E+00 1.1E+00 8.8E-02 1.1E-01

54053NEIWV053FELMAN Arsenic compounds 6.7E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00

39167NEI11660 Arsenic compounds 6.3E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00

39167NEI11660 Hydrofluoric acid 4.6E+00 1.4E+00 6.9E-01 5.5E-02 6.9E-02

54053NEIWV053FELMAN Formaldehyde 4.0E+00 2.0E-01 1.8E-01 1.3E-02 1.8E-02

54053NEIWV053FELMAN Mercury (elemental) 2.1E+00 0.0E+00 0.0E+00 7.5E-04 6.4E-04

39167NEI11660 Formaldehyde 1.6E+00 8.0E-02 7.4E-02 5.2E-03 7.4E-03

39167NEI11660 Mercury (elemental) 9.0E-01 0.0E+00 0.0E+00 3.2E-04 2.7E-04

54053NEIWV053FELMAN Hydrochloric acid 7.2E-01 5.6E-01 3.4E-01 4.6E-02 5.0E-02

39167NEI11660 Hydrochloric acid 2.4E-01 1.9E-01 1.1E-01 1.5E-02 1.7E-02

REL AEGL1 ERPG1 AEGL2 ERPG2

54053NEIWV053FELMAN Hydrofluoric acid 5.8E+00 1.7E+00 8.7E-01 6.9E-02 8.7E-02

54053NEIWV053FELMAN Formaldehyde 3.6E+00 1.8E-01 1.7E-01 1.2E-02 1.7E-02

54053NEIWV053FELMAN Arsenic compounds 2.5E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00

54053NEIWV053FELMAN Mercury (elemental) 2.1E+00 0.0E+00 0.0E+00 7.6E-04 6.4E-04

39167NEI11660 Arsenic compounds 1.8E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00

39167NEI11660 Mercury (elemental) 9.0E-01 0.0E+00 0.0E+00 3.2E-04 2.7E-04

39167NEI11660 Hydrofluoric acid 8.2E-01 2.4E-01 1.2E-01 9.8E-03 1.2E-02

39167NEI11660 Formaldehyde 7.0E-01 3.4E-02 3.2E-02 2.2E-03 3.2E-03

54053NEIWV053FELMAN Hydrochloric acid 4.7E-01 3.7E-01 2.2E-01 3.0E-02 3.3E-02

39167NEI11660 Hydrochloric acid 4.8E-02 3.4E-02 2.2E-02 3.1E-03 3.4E-03

 Note: BOLD indicates acute risks greater than 1

Baseline Modeling Scenario

Post-Control Modeling Scenario

Facility NEI ID Pollutant

Maximum Hazard Quotient1

1 Some maximum acute impacts may be at onsite locations.

Table 3 – Maximum Predicted Acute Risks (HEM-AERMOD)

Pollutant

Ferroalloys

Maximum Hazard Quotient1

Facility NEI ID

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54053NEIWV053FELMAN Hydrofluoric acid REL 7 <1

54053NEIWV053FELMAN Arsenic compounds REL 7 <1

39167NEI11660 Arsenic compounds REL 6 <1

39167NEI11660 Hydrofluoric acid REL 5 <1

54053NEIWV053FELMAN Formaldehyde REL 4 0.6

54053NEIWV053FELMAN Mercury (elemental) REL 2 0.2

54053NEIWV053FELMAN Hydrofluoric acid AEGL1 2 0.4

39167NEI11660 Formaldehyde REL 2 0.5

54053NEIWV053FELMAN Hydrofluoric acid REL 6 <1

54053NEIWV053FELMAN Formaldehyde REL 4 <1

54053NEIWV053FELMAN Arsenic compounds REL 3 <1

54053NEIWV053FELMAN Mercury (elemental) REL 2 <1

39167NEI11660 Arsenic compounds REL 2 <1

54053NEIWV053FELMAN Hydrofluoric acid AEGL1 2 <1

Notes:

1 - Facilities with a HEM-3 screening acute value greater than 1 were refined.

2 - See Appendix 7 for figures depicting off-site impacts.

Ferroalloys

Facility NEI ID

Post-Control Modeling Scenario

Facility NEI ID Pollutant Criteria

HEM-3

(Screening)

Refined

Results 1

Applied process-specific acute factors and 

examined results for maximum off-site impact

Refined Modeling Approach 2

Table 4 – Maximum Predicted Acute Risks Greater than 1 (Refined Approach)

Refined Modeling Approach 2 Pollutant Criteria

HEM-3

(Screening)

Refined

Results 1

Baseline Modeling Scenario

Applied process-specific acute factors and 

examined results for maximum off-site impact

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